1 In Windows 10, the key combination WindowsKey+PrntScrn sends a png picture of your screen to your Screenshots folder. When this happens, the screen momentarily dims slightly to tell you that you are doing it. If your PrntScrn key has two jobs then you may need to press the Fn key as well -> Fn-WinKey-PrntScrn.
Wiktionary (5.00 / 10 votes) Rate this definition: petroleum (Noun). A flammable liquid ranging in color from clear to very dark brown and black, consisting mainly of hydrocarbons, occurring naturally in deposits under earth surface. Origin: From petroleum, from petra + oleum.
When oil is referred to in the company of gasoline, crude oil is specifically what is intended. Crude or unrefined oil is also called petroleum. Petroleum is a naturally occurring liquid fossil fuel made up of multiple hydrocarbons and other organic compounds that can be found in rock formations of the Earthâs surface.fter the oil is distilled, it is used to make a variety of petroleum derivatives with fuel derivatives being the most common. Ad. The major difference between oil and gasoline is the fact that gasoline is a fuel derivative of oil.